The aim of the present work was to study the fractionation of Eucalyptus globulus wood into pulp and by-products by alcohol–water pulping. Under the cooking conditions employed low lignin content pulp and a high yield of by-products were attained. The laboratory-scale alcohol and by-products recovery system studied consisted of three stages: black liquor flashing, lignin precipitation from black liquor, and distillation of precipitation mother liquor. The mass balance for the process enabled the amount of pulp and by-products produced and the consumption of chemicals to be estimated.
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BOTELLO et al. (1999) studied this question.
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